CVE-2024-8981: high-severity vulnerability in wpmudev Broken Link Checker
Broken Link Checker <= 2.4.0 - Reflected Cross-Site Scripting
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.5%
The Broken Link Checker plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg in /app/admin-notices/features/class-view.php without appropriate escaping on the URL in all versions up to, and including, 2.4.0. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Affected products
wpmudev · Broken Link CheckerRelated CVEs — wpmudev Broken Link Checker
In the same product, most dangerous first.
CVE-2022-2438HIGHBroken Link Checker <= 1.11.16 - Authenticated (Admin+) PHAR DeserializationEPSS 1.8%CVE-2026-75528HIGHBroken Link Checker <= 2.4.13 - Unauthenticated Stored Cross-Site Scripting via Comment Author URL / Link LogEPSS 0.5%CVE-2025-4047MEDIUMBroken Link Checker <= 2.4.4 - Missing Autorization to Authenticated (Subscriber+) Plugin Status Dashboard ViewEPSS 0.3%CVE-2026-96562MEDIUMBroken Link Checker <= 2.4.14.1 - Unauthenticated Arbitrary Shortcode Execution via parser_callbackEPSS 0.3%
References
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.0/app/admin-notices/features/class-view.php#L43https://plugins.trac.wordpress.org/changeset/3159860/broken-link-checker/trunk/app/admin-notices/features/class-view.phphttps://www.wordfence.com/threat-intel/vulnerabilities/id/429fe34a-5fa9-4032-9b21-4de114dbc9d1?source=cve